Erbijsommen tot 20
Erbijsommen
|
1.
1 + 6 =
2
7
|
2.
1 + 14 =
15
6
|
3.
11 + 3 =
14
2
|
4.
12 + 8 =
20
15
|
|
5.
1 + 14 =
7
15
|
6.
5 + 12 =
17
7
|
7.
6 + 8 =
8
14
|
8.
14 + 0 =
14
8
|
|
9.
9 + 4 =
11
13
|
10.
15 + 0 =
15
8
|
11.
1 + 10 =
3
11
|
12.
12 + 0 =
6
12
|
|
13.
8 + 0 =
4
8
|
14.
17 + 0 =
17
11
|
15.
19 + 1 =
20
4
|
16.
15 + 1 =
5
16
|
|
17.
9 + 3 =
13
12
|
18.
18 + 2 =
9
20
|
19.
19 + 0 =
19
11
|
20.
6 + 13 =
10
19
|